If is a BAK12/14 or equivalent that retracts into the runway, you don't have a problem (you're not touching it) provided that it is retracted.
If it is a permanently raised cable (held a couple of inches off the runway by rubber grommets) or a BAK12/14 in the raised position, you can only trample it if trampling trials have been done for the type of aircraft you are operating, and then only in accordance with those limits. Unless you are flying a military type it is unlikely that trampling trials will have been conducted. This will also apply to taxying over the cable.
If tension is lost in the cable (ie, cable has been drawn out of the braking drums) you cannot cross it at any speed in any type of aircraft.
The problem with tramping is that the cable can 're-bound' slightly off the runway after each set of landing gear has crossed it and could damage some part of the aircraft (esp brake lines, antennae).